Gearing mechanism

ABSTRACT

452,091. Reversing-gearing. RENAULT, L., 8, Avenue Emile Zola, Billancourt, Seine, France. Feb. 6, 1936, No. 3672. Convention date, April 16, 1935. [Class 80 (ii)] [See also Group XXXI] A vehicle transmission mechanism adapted to transmit power simultaneously from a primary shaft 1, Fig. 2, to two driving axles, 6, 7, Fig. 1, which are on opposite sides of it and are adapted to be driven alternatively in opposite directions, is characterized in that two secondary shafts 4, 5 are geared on the one hand to their respective axles 7, 6and on the other hand are interconnected by a gear pair 8, 9 so as to rotate in opposite directions, and means are provided for driving positively either secondary shaft at will from the primary shaft. In the form shown, a pinion 2 is splined on the shaft 1 and the change in direction of the vehicle is obtained by sliding the pinion 2 from engagement with a wheel 10 fast on the shaft 4 into engagement with a wheel 11 fast on the shaft 5. In another form, there are two constant-mesh pinions loose on the shaft 1 with a sliding double clutch between them. In a third form, the constant-mesh pinions are fast on the shaft 1 and the wheels 10, 11 are loose and adapted to be entrained by alternative clutches.

July 13, 1937. 1.. sAlv Es 2,087,166

GEARING MECHAN I SM Filed March 20, 1936 2 Sheets-Sheet l July 13, 1937. L. SAIVES Gamma MECHANISM Filed March 20, 1936 2 Sheets-Sheet 2 Patented July 13, 1937 PATENT OFFICE 2,087,166 GEARING MECHANISM Leon Saives, Billancourt, France, assignor to Louis Renault, Billancourt, France Application March 20, 1 936, Serial No. 69,951 In France April 16, 1935 4 Claims.

The invention relates to an arrangement for the transmission of reversible rotatory motion in two opposite directions of rotation and arranged to operate in such a manner that the total ef- 5 ficiency shall be the same in either direction of rotation. Proceeding on this idea, a shaft receiving its motion from a motor driven member, either directly or, through the intermediary .of

- various members positively rotates a pinion adapted to slide on the said shaft by means of grooves or keys.

Beneath the said shaft are disposed two other shafts designed to propagate the motion in two parallel directions either in the same direction as 15 the original motion or in the reverse direction, the said shafts being connected one to the other by means of two pinions which serve to reverse the direction of motion of the said shafts with respect to each other.

, Each of the said shafts also .carries another pinion with which the pinion which is adapted to be moved along the primary shaft and which receives its motion from the motor driven member may be placed in gear in such a way .as to transmit its motion directlyto the one or the other of the said pinions.

The invention is more particularly applicable to the control of a double-axle bogie of a railway carriage, but may be equally well applied 0 to all kinds of transmission, such as the rear axles of vehicles having double driving axles, machine tools, elevating machinery, etc. in which is used a two direction relay for reversing the direction of motion.

In order that the invention may be better understood it will be described more particularly with reference to the accompanying drawings, which represents by way of example anarrangement for the-control of a double-axle bogie of a lrailway carriage.

Fig. 1 represents diagrammatically a plan of the vehiclefhaving double-driving axles.

Fig. 2 is a detail of the driving shaft. 9

Figures 3 and 4 are fragmentary views in plan and elevation, respectively, and partly in section of a modification of the invention.

Figures 5 and 6 are similar views of a further modification.

I indicates a shaft which receives its motion 0 from the motor element either directly or through the intermediary of various members, such as a clutch or coupling, change speed gear, etc., and

the said shaft has a pinion 2 mounted thereon and driven thereby whilst at the same time being 5- capable of sliding by means of keys or grooves 3'.

Beneath theshaft I are arranged in a conven 'ient manner two parallel shafts 4, 5, for the purpose of propagating the motion in the same direction or in the reverse direction and in two parallel directions in order to transmit the motion 5 to the axles 6 and I. On each of the shafts 4 and 5, pinions 8 and 9 are rigidly secured which are in engagement and consequently cause the said shafts to rotate in opposite directions. Each of the shafts 4 and 5 also have pinions I0 and II 10 rigidly secured thereon adjacent the pinions 8 and 9 respectively.

The movable pinion 2 which is mounted. on the shaft I may therefore be displaced in such a manner that it is capable of engaging with one or the other of the pinions III or I I, in such a manner as to transmit themotion directly to the one or the other of these pinions.

The shaft I turns always in the same direction; it the pinion 2 is displaced in such a manner as 0 to engage with the pinion I0, then the shaft 4 will turn in consequence in the reverse direction 'to the shaft I and will transmit through the pinions 8 and 9 the motion to the shaft 5 whilst at the'same time reversing the direction so that the latter will turn in thesame direction as the shaft I.

If, on the contrary, the pinion 2 is placed in engagement with the pinion II on the shaft 5, this will then turn in the reverse direction to the shaft I and will transmit its motion through the pinions 9 and 8 to the shaft 4, which will then turn in the same direction as the shaft I.

Equally in each case, one of the shafts 4 and 5 receives its motion from the shaft I through one stage of gearing because the pinion 2 may be placed in engagement equally with the pinion I 0 or pinion I I, whilst the other shaft will receive its. motion in the first instance through two stages of gearing, that is to say through the gears 8 and 9 40 or vice versa.

The power is therefore transmitted by the shaft I with the same efficiency to the assembly of the two shafts 4 and5 whatever maybe the direction of rotation.

In the form of the invention shown on Figures 3 and 4, two toothed wheels I2 and- I3 are rotatably mounted on the driving shaft I and are in permanent engagement with the wheels I0 and II of the shafts 4 and 5. A sleeve having coupling claws is slidably keyed on the shaft I and is engageable with one or the other of the toothed wheels I2 and I3 for transmitting the motion to the shaft 5' through the shaft 4 or 55 in a reverse direction to the 4 through the shaft 5.

allel directions with change of direction comprising a primary shaft driven by a source of power, two parallel secondary shafts connected by a gearing in permanent engagement, two similar gears on said secondary shafts and means for connecting atwili said primary shaft with one or the other of said secondary shafts through the medium of one of said similar gears. I

2. A device as claimed in claim 1 comprising on said primary shaft a slidable rotating toothed wheel which maybe engaged with one of the similar gears rotating with thesecondary shafts.

3. A device as claimed in claim 1 comprising on said primary shaft two toothed wheels in permanent engagement with the similar gears rotating with the secondary shafts and means for clutching one of said toothed wheels with said primary shaft. a.

4. A device as claimed in claim 1, comprising on said primary shaft two toothed wheels fixed to said shaft and in permanent engagement with the similar gears rotating freely-on said secondary shafts and means for clutching one of said similar gears with the corresponding secondary shaft.-

LEON SAIVES. 

